package com.icode.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.icode.common.constant.ProductConstant;
import com.icode.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.icode.gulimall.product.dao.AttrGroupDao;
import com.icode.gulimall.product.dao.CategoryDao;
import com.icode.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.icode.gulimall.product.entity.AttrGroupEntity;
import com.icode.gulimall.product.entity.CategoryEntity;
import com.icode.gulimall.product.service.CategoryService;
import com.icode.gulimall.product.vo.AttrGroupRelationVo;
import com.icode.gulimall.product.vo.AttrRespVo;
import com.icode.gulimall.product.vo.AttrVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.lang.reflect.Constructor;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.icode.common.utils.PageUtils;
import com.icode.common.utils.Query;

import com.icode.gulimall.product.dao.AttrDao;
import com.icode.gulimall.product.entity.AttrEntity;
import com.icode.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

@Slf4j
@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public void deleteRelation(AttrGroupRelationVo[] relationVos) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(relationVos).stream().map(itme -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(itme, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取当前属性没有关联是属性
     *
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils attrNoRelation(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        //获取当前分类的id
        Long catelogId = attrGroupEntity.getCatelogId();

        //2、当前分组只能关联别的分组没有引用的属性
        //2.1）、当前分类下的其它分组
        List<AttrGroupEntity> groupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id", catelogId));

        //获取到所有的attrGroupId
        List<Long> collect = groupEntities.stream().map((item) -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());


        //2.2）、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList
                (new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));

        List<Long> attrIds = groupId.stream().map((item) -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3）、从当前分类的所有属性移除这些属性
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>()
                .eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());

        if (attrIds != null && attrIds.size() > 0) {
            queryWrapper.notIn("attr_id", attrIds);
        }

        //判断是否有参数进行模糊查询
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);

        PageUtils pageUtils = new PageUtils(page);


        return pageUtils;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        List<Long> resultAttrIds = this.baseMapper.selectSearchAttrIds(attrIds);
        return resultAttrIds;
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryAttrPage(Map<String, Object> params, Long catelogId, String attrType) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(attrType) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        System.out.println("base".equalsIgnoreCase(attrType));
        if (catelogId != 0) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and(wrapper -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map(attrEntity -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            if ("base".equalsIgnoreCase(attrType)) {
                //设置分类和分组名称
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(
                        new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId())
                );
                if (attrId != null && attrId.getAttrGroupId() != null) {
                    AttrGroupEntity groupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(groupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());
        Constructor constructor[] = AttrServiceImpl.class.getConstructors();
        pageUtils.setList(respVos);
        return pageUtils;

    }

    @Cacheable(value = "attr", key = "'attrInfo:'+ #root.args[0]")
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, respVo);
        //1、设置分组信息
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {

                AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
                if (relationEntity != null) {
                    respVo.setAttrGroupId(relationEntity.getAttrGroupId());

                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                    if (attrGroupEntity != null) {
                        respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                    }
                }
            }
        }


        //2、设置分类信息
        Long catalogId = attrEntity.getCatelogId();
        Long[] catalogPath = categoryService.findCatalogPath(catalogId);
        respVo.setCatelogPath(catalogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catalogId);
        if (categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }



        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //修改分组关联
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count == 0) {
                relationDao.insert(relationEntity);
            } else {
                relationDao.update(relationEntity,
                        new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            }
        }

    }

    /**
     * 根据分组id查询关联的所有属性
     *
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));

        List<Long> attrids = entities.stream().map(attr ->
                attr.getAttrId()
        ).collect(Collectors.toList());

        if (attrids == null || attrids.size() == 0) {
            return null;
        }

        List<AttrEntity> attrEntities = this.listByIds(attrids);
        return attrEntities;
    }

    @Transactional
    @Override
    public void saveDatail(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        //org.springframework.beans public abstract class BeanUtils extends Object
        //将attr中与attrEntity字段相同的的属性复制到attrEntity中
        BeanUtils.copyProperties(attr, attrEntity);
        this.save(attrEntity);
        //保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationEntity.setAttrId(attr.getAttrId());
            relationDao.insert(attrAttrgroupRelationEntity);
        }

    }

}